Disclaimer: All the custom roms and firmwares files, root files, updates, tools, mods or anything mentioned in the tutorial belong to their respective owners/developers. we are not to be held responsible if you damage or brick your device. We are not forcing you to do, it's your own decision.

Before You Begin Rooting :1.Turn On USB Debugging :
Go to - Settings - About Phone - Build Number
Now Tap 7-8 times on Build Number, It will show a message "You are now a developer!"
Now Go back to Settings screen and choose "Developer Options" and then, select "USB Debugging".

How to Boot into Galaxy J7 Download Mode :1. Turn off Your device and then wait 5-6 seconds2. Now press and hold Volume Down Button, Home Button and then Power Button Together for few seconds untill you see Warning! Screen3. Now press Volume Up Button to continue